Hi,
If I understand right you want to set the width of the grid to given width of some element. Right?
Initially this can be done this way:
// get the width of the element

el_width = $(“elem”).width()
$(“tbl_id”).jqGrid({
// here are other parameters
….

width : el_width,
…
})

This way the grid will have the width that you want.
The missing part here is that there is no method to set the new width of the grid, but I think that this can be done

Regards
Tony